Python untyped_expressionLexer Examples

Example #1

File: test.py Project: scyptnex/computing

def main(argv):
    input = FileStream(argv[1])
    lexer = untyped_expressionLexer(input)
    stream = CommonTokenStream(lexer)
    parser = untyped_expressionParser(stream)
    tree = parser.expr()
    print(tree.toStringTree(recog=parser))

Example #2

 def readExpr(self, text):
     inp = antlr4.InputStream(text)
     lexer = untyped_expressionLexer(inp)
     lexer.removeErrorListeners()
     lexer.addErrorListener(self)
     stream = antlr4.CommonTokenStream(lexer)
     parser = untyped_expressionParser(stream)
     parser._listeners = [self]
     return self.visit(parser.start())

Example #3

File: calculator.py Project: scyptnex/computing

 def readExpr(self, text):
     inp = antlr4.InputStream(text)
     lexer = untyped_expressionLexer(inp)
     lexer.removeErrorListeners()
     lexer.addErrorListener(self)
     stream = antlr4.CommonTokenStream(lexer)
     parser = untyped_expressionParser(stream)
     parser._listeners = [self]
     return self.visit(parser.start())

Example #4

File: expression.py Project: scyptnex/computing

def readExpr(expr_string):
    errs = _custom_error_handler()
    inp = antlr4.InputStream(expr_string)
    lexer = untyped_expressionLexer(inp)
    lexer.removeErrorListeners()
    lexer.addErrorListener(errs)
    stream = antlr4.CommonTokenStream(lexer)
    parser = untyped_expressionParser(stream)
    parser._listeners = [errs]
    return _parse_visitor().visit(parser.start())

Example #5

File: expression.py Project: scyptnex/computing

def readExpr(expr_string):
    errs = _custom_error_handler()
    inp = antlr4.InputStream(expr_string)
    lexer = untyped_expressionLexer(inp)
    lexer.removeErrorListeners()
    lexer.addErrorListener(errs)
    stream = antlr4.CommonTokenStream(lexer)
    parser = untyped_expressionParser(stream)
    parser._listeners = [errs]
    return _parse_visitor().visit(parser.start())